Ore-crusher.



PATBNTED JULY 10, 1906.

I. N. BONSAL.

ORE GRUSHER.

APPLICATION EILED AUG.25. 1905.

2 SHEETS-SHEET 1 No. 825,699. PATENTED JULY 10, 1906. 1. N. BONSAL. ORE GRUSHER.

APPLICATION IILED AUG. 25. 1905.

2 SHEETS-SHEET 2.

W1 twzooco UNITED STATES ISAAC N. BONSAL, OFORONOGO, MISSOURI.

ORECRUSHER.

To all whom it may concern.-

Be it known that I,'IsAAo N. BONSAL,- a citizen of the United States, residing at Oronogo, in the county of Jasper, State of Missouri, have invented certain new and useful Improvements in Ore-Crushers and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to rock and ore crushers of what is commonly known as the Blake type, and has for its object to provide certain new and useful improvements for taking up wear to which devices of this class are subjected.

In my experience I find that it is not only the exposed faces of the side wear-plates which become worn, but the bed itself becomes worn back of the wear-plates by reason of the sand, water, &c., working in between the wear-plates and the bed. This wearing away of the bed is most noticeable at the lower edge portions of the wear-plates, and when the bed has been Worn to a certain extent there is no backing to the wear-plates, particularly at their lower edges, and the crushing operation of the movable jaw tends to chip off the lower edge portions of the wear-plates, and thereby render the device defective.

To overcome the difficulty above mentioned, I propose to provide supplemental wear-plates or backing-plates,.which are designed to be situated between the wear-plates and the sides of the bed, so as to take the wear usually taken by the bed. When these backing-plates become worn, they may .be readily substituted by new plates, whereby the main wear-plates may always be backed in an efficient manner and the device thereby maintained in its ro er working condition.

With these and ot er objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claim, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claim without departing from the s irit or sacrificing any of the advantages of t e invention.

In the drawin s, Figure 1 is a longitudinal sectional view of an ore and rock crusher in- Specification of Letters Patent. Application filed August 25,1905. Serial 110 275304- PatentedJ'uly 10, 1906.

volving the featuresof the, present invention.

Fig. 2 is a top plan view of the bed of the device with the operating parts removed. Figs. 3 and 4 are detail views of one of the supplemental wear-plates or backing-plates. Fig. 5 is a cross-sectional view on the line 5 50f Fig. 2.

Like characters of reference indicate corresponding parts in each of the several figures of the drawings.

For illustrating the application of the present invention there has beenshown in theaccompanying drawings an ordinary formof crusher-bed 1, which is in the nature of an open rectangular frame provided at opposite sides with corresponding bearings 2 for the reception of an eccentric drive-shaft 3. From this shaft there depends an eccentric bum er 4 for the operation of a jaw-bumper 5. T is crusher-bed 1 and is loosely hung from a substantially horizontal shaft 6, mounted in suitable bearings upon the top of the crusherbed. A jaw 6 is removably secured to the front side of the jaw-bumper 5 and is designed to cooperate with the stationary jaw 7, suitably secured to the inner face of the adjacent end of the crusher-bed. There is a link 8 extending between the bumper 4 and the jawbumper 5, and another link 9 extends rear wardly from the bumper 4 and engages a wedge-block 10 in the manner of a toggle, the position of the wedge-block 10 being adjusted y means of a movable wedge 11, controlled by an adjusting-bolt 12. At each side of the movable jaw there is a pair of removable Wear-plates 13 and 14, which may be of any usual or preferred construction, and it will here be explained that the bed becomes Worn back of its wear-plates by reason of whatever slight rubbing movements may be exerted by these plates and by reason of the sand and and the bed.

In carrying out my invention I provide each inner face of the bed with a vertical recess 15, located at the point of application of the wear-plates 13 and 14, and in each of these plates or recesses I mount a supplemental wear-plate or backing-plate 16, which is shown in detail in Figs. 3 and 4. This plate is provided with a pair of perforations 17 and seats or recesses 18 concentric with the openin s, and at that face of the backing-plate w 'ch is adjacent the wear-plate suitable headed fastenings 19, such as bolts, are passed jaw-bumper works between the sides of the other material working in between the plates.

w Wornsufiiciently to fail to through the bed and the openings 17, with their heads snugly fitted in the seats 8, Whereby the backing-plates are removably held in place.

During the operation of the device the backing-plates take the wear which heretofore has been placed upon the bed, and after the machine has been run for a suitablelength of time or as soon as the wear-plates 13 and 14 become broken at their lower edges or indicate that the backing-plates have become properly back the wear-plates the backin plates are removed and others substituted fi erefor, whereby the device will be restored to its proper operable condition.

Among the advanta es of the present invention it will be noted that the application thereof does not alter the construction or arrangement of any of the elements of the original machine, the only change being in the production of the seats or recesses 15 in the crusher-bed, which can be easily produced without impairing the efiectiveness of the machine. 7

Having thus described the invention, What is claimed is- In a crushing-machine of the character described, the combination of an open crusherbed, a stationary jaw fixed within one end of the bed, a movable jaw Working between the sides of the bed in cooperative relation with the stationary jaw, wear-plates secured to the inner walls of the bed between the two jaws, the inner walls of the bed being provided with open-ended recesses at the backs of the wear-plates, backing-plates fitted within the recesses, and removable fastenings piercing tllle sides of the bed and engaging the backingp ates.

In testimony whereof I aifix my signature in presence of two witnesses.

ISAAC N. BONSAL.

Witnesses:

FRED. NEFF, PHILIP H. LEISS. 

